Toughening polypropylene and its nanocomposites with submicrometer voids

Aravind Dasari; Qing Xin Zhang; Zhong Zhen Yu; Yiu Wing Mai

doi:10.1021/ma100633y

Toughening polypropylene and its nanocomposites with submicrometer voids

Aravind Dasari, Qing Xin Zhang, Zhong Zhen Yu, Yiu Wing Mai

Research output: Journal article publication › Journal article › Academic research › peer-review

72 Citations (Scopus)

Abstract

Thispaper deals withanovelconceptofinductionofwell-distributed submicrometer voidsinpolypropylene (PP) and PP/CaCO₃ nanocomposites during processing to alleviate their brittleness without sacrificing Young's modulus and yield strength. The role of these voids in initiating/participating in the plastic deformation processes during tensile and double-notch four-point-bend (DN-4-PB) tests is investigated. It is shown that the voids act in a similar way as the cavitated rubber particles in rubber-toughened polymer systems; that is, plastic growth (of the pre-existent voids) in the PP matrix occurs upon deformation and subsequently triggers large plastic deformation of the surrounding matrix in the form of isolated and domainlike craze structures.

Original language	English
Pages (from-to)	5734-5739
Number of pages	6
Journal	Macromolecules
Volume	43
Issue number	13
DOIs	https://doi.org/10.1021/ma100633y
Publication status	Published - 13 Jul 2010
Externally published	Yes

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Inorganic Chemistry
Materials Chemistry

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10.1021/ma100633y

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abstract = "Thispaper deals withanovelconceptofinductionofwell-distributed submicrometer voidsinpolypropylene (PP) and PP/CaCO3 nanocomposites during processing to alleviate their brittleness without sacrificing Young's modulus and yield strength. The role of these voids in initiating/participating in the plastic deformation processes during tensile and double-notch four-point-bend (DN-4-PB) tests is investigated. It is shown that the voids act in a similar way as the cavitated rubber particles in rubber-toughened polymer systems; that is, plastic growth (of the pre-existent voids) in the PP matrix occurs upon deformation and subsequently triggers large plastic deformation of the surrounding matrix in the form of isolated and domainlike craze structures.",

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AU - Dasari, Aravind

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AU - Mai, Yiu Wing

PY - 2010/7/13

Y1 - 2010/7/13

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AB - Thispaper deals withanovelconceptofinductionofwell-distributed submicrometer voidsinpolypropylene (PP) and PP/CaCO3 nanocomposites during processing to alleviate their brittleness without sacrificing Young's modulus and yield strength. The role of these voids in initiating/participating in the plastic deformation processes during tensile and double-notch four-point-bend (DN-4-PB) tests is investigated. It is shown that the voids act in a similar way as the cavitated rubber particles in rubber-toughened polymer systems; that is, plastic growth (of the pre-existent voids) in the PP matrix occurs upon deformation and subsequently triggers large plastic deformation of the surrounding matrix in the form of isolated and domainlike craze structures.

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Toughening polypropylene and its nanocomposites with submicrometer voids

Abstract

ASJC Scopus subject areas

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